Q: What is the sum of all factors of the number 16,506,780 excluding 16,506,780?

A: 30,178,404

Why is 30,178,404 the sum of all factors of 16,506,780, excluding 16,506,780?

The factors of the number 16,506,780 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 103, 206, 309, 412, 515, 618, 1030, 1236, 1545, 2060, 2671, 3090, 5342, 6180, 8013, 10684, 13355, 16026, 26710, 32052, 40065, 53420, 80130, 160260, 275113, 550226, 825339, 1100452, 1375565, 1650678, 2751130, 3301356, 4126695, 5502260, 8253390, 16506780.

If you add them up, you will get the total of 16,506,810. Now subtract 16,506,780 to get 30,178,404